Shank and bit punch



March 29, 1932. J. DITSON ET AL SHANK AND BIT PUNCH Filed May 4, 1929 aw i MN Q 1 A]. W m H 0 VG mu p 1 d u w JMN THEZE A TTORNEY Patented Mar.29, .1932

eases amen; enumeration, Am) DUDLEY, w, HART, or 'nniivrml oononnno,

' s'sie'noies s CORPORATION OF NEWJERSEY 7 To menu-sent new COMPANY}; onERsEYcIrxR NEW EBSEQYK A V SHA K- HW H [Application filed May 4, 192a.seria nopaeossex' I invention reIiitest p nn g t' 'jvic sand moreparticularly to a shank and jbit punch of the type usedfor reforming the"bores in the ends of drill steels-wand similar Working implementshaving passages for con-;*

" veyingcleansing fluid to thework. I

P the relatively movable surfaces of the shank {and bit punch and itssupport against ear.

' w an d'to assure an adequate supply of lubricant *in'suitable forrntothese surfaces.

Other objects will be in part obv'iousand in, part pointed outhereinafter.

fer to similar parts,

Figure-1 in section of a shank and bit; punch and: its

support constructed. inv accordance with the Figure 1 on the line 2+2looking in the dis;

rection indicated byftlie arrows.

ings, the shank and bit punchis designated generally by A and itssupportby The l support B may be in the form of abracket having a flange Cthroughjwhich extend bolts I D whereby the support may be secured to a30 foundation or, as" is frequently done, to a drill sharpening machine(not shown) for conveying cleansing fluid from a rock drill to the holebeing drilled. i

holding the bearing 0 is shown for this purpose andsaid bearingis'suitably by means of bolts as a holder for bushings to conform to theshape of the drillsteel y 60 Which they are intended to receive.

1s a longitudinal elevation partly tively to the piston, T.. n-

, The pressure mediumflut Referringjmorefparticularly to theidravvtween: either which may consist of the usual cylinder G5 and ahammer piston H, is to actuatepr drive a punch pin J into-an articleintendedtobe f pinned out, as for instance,a drill steel K havingalongitudinal passage L therethrough secured to the support B P. Thebearing 0 serves Q having a bore "R- The feeding elementgFycomprises theusual I feeding, cylinder js liWlllChis preferably? formedintegrallyvvithbhe percussive .cy'lin he cylinders G andfS may'lbe.of-.,fl substantially-.t-hesame length and lie;atdiffer .eentelevations and are also; oft-set With re- "The objects of the inventionare to protect. 1

de r G.

spect toeaChother. i

- avvay froin-zthe Workthefeedingcylinders i is provided --vvit h apiston T V v of the; feedingv cylinder jofthe support B. Thusarrangedsthepiston I -T is stationary andin'consequence' the hcylinw. 3

ders G and, S are adaptedlto beactuated erela J ili zd fonragtfiap ing.the cylinders may bemcompressed air which may be introducedintoa-centrall'chamberXof a throttle valve Y disposed rotatably a The.pressurefluid. flows a fronithe chamberwX infthei 'throttle valve 1through a-portZ,1vvhich:in one position regis V s BISWith an inlet:passage: 6 leading toithe forward end of; the *feedi'n'g cylinderS,"and" in the back head V.

winjanotherjposition registers with an inlet passage 0 leading to,the'rearvvard'endof the feeding cylinder -15. In the periphery; of thei 1 throttle-valvevY is an annulargroove, d of n ;such extent .astoafford communication'xbeof ,thecinlet passages b and a I and an exhaustport'eleading tothe atmos- Suitable devices provided to enablethethrottle valve'iY' to .be manipulated'from a point -;at the. forwardendof the punch. a

That'illustrated comprises a lever f pivoted atone end to an arm on thesupportQB v pivotally "connected at 1:, i one endfto the lever. f andWith its other end,

and a linkorfrod h to an arm j carried by the throttle valve s With-the,exceptionof the specific arrange- 'ment of' the cylindersrashereinbefore d8- scribed the. parts sofarreferred to may be of any vvellknown type. They are: included 7 herein .Inerely: for :thesake ofillustrating a practical embodiment of the invention and its advantages1 as applied to aashank and 'bit p nchhaving a rod U1 yvhich'fprojectsslidablyithrough aback'he'ad' I I andis-connected s v. to abracketl/Vjmounted on the rearward end- In the drawings illustratingtheinvention 15 and inwhich similar reference characters reiwbearing'surfaces k In shank and bitpunches a source of difficultyand'one which often entails costly. re-

placements is that of wear to which thecom- ",paratively expensive partsof the shank and bit PURChySUChfiS the-cylinders and the1r tiona'bleonthe bearing su'rfacesf'where, theirfiabrading action, they speedilyrender these parts unfit for service. present invention aims to overcomethis undesirable occurrence. To this end-,the'supportBis;pro

vided with a plurality, in this instance, two

and i ent; elevations and 1 planes ofi-set with re :spect' to: eachother?" The bearing surfaceis lies at a higher elevation than thebearing I surface b and serves as ax-support" directly beneath the elinder G and' the bearing sur faceo lies directly beneath the-fee'dingcylin i "pinning'out operation, and also that these surfaces may" be: atall times "adequately lubri'cated" This'wall'prOlOngthe-life der forwhich i t forms 'asupport.

I f .wAti the. sides of'the surfaces hand 0""are' bevelledsurfaces andqrespectively?These 'wbevelle'd surfaces cooperate 'with'similar''bevlabelled surfaces r of gibss secured tothe cylin-g i ders G and Sfor holding the said cylinders in 'theproper operative p'os'itionL'Preferably shims t are' disposed between the gibs s I and u -F;thecylinders-so-that;in the= eventofwear on the cooperating, surfacesl'ofrthe gibs and the s ort, shims maybe -removed 'for the pur.poseofadj-ustingth ibs sin both lateraliand vertical directions.

I I. -Means-are provided to: protect the .dersi againstthe efiect's ofwear-due to theirreciprocatoryaction relatively to thesupport.

I- fTo'this end -bearing shoesu and care dis 3 40 .posea beneath the:cylinders G and SreSpec-J i; Etiilyf and to which "th eyf may ;besecured in kanyzsuitable manner- The shoes u and 'v are preferably ofsuch length that the? forward lportiono-f the bearing surfaces k and0-are :atall times covered by. the said shoes. Pref erablythe shoeswand; i v 'are ofsuch lengths 7 that in ftheflfully retracted position iof k the 1 e -.'.shankiandbitpunch the forwardendsof said shoesslightlyoverhangthe adjacent ends of 1 5 g-the -bearingsurfaces. In-thisway any scale .which may .be' broken froin -the' work and ered bythe'actiomof the punch pin willj rbe pr e odgingoil'thebearing I f 1 y YQ cy'linder, a support for-"the cylinder'having a" plurality of bearingn fd 'g: tdiff m q atone end through whichrtheoil-may bein- '1 'troducedinto.- the-reservoir. The opening 1 fimaybe' normally sealed by a fillerplug 1 From points near the top: and bottom of 0 which lie at differ the'-comparatively i expensive elements of the Punchi P .3

- ing' surface'and adapt-ed" to 'overhangoneend the cylinder G. In therecess .3 is disposed? fibrous material 4:, as for instance felt, Whichserves to filter the oil flowing into the recess.

Such oil may flow from the recess '3 through .a port orportsj5iin theshoe u to lubricate 5 thecontiguous surfaces of-the-;;shoe; andthesupport... 7 I m, 1

Iii-like manner recesses 6 are formed in the ibottom'surfa'ces of thefeeding cylinder S to receive'oil from thepassage 2. In these recessesL6:m'ay also bedisposed fibrous mate-' ma]. 7 to'filter theoil whichflows from the recess-es to the bearing surface; bfthrough *ports 8111the shoes;

I Fromthe', foregoing"description:itf ivillfbe V observed-that the shankand bit punch and its support will atflall times" be" prote'cted againstthe wear occasionedlbythe griti'and scale-usually present in thevicinity'of the f t parts and a'n'y wear which-mayoccu willbe onrelatively inexpensive parts whicliimay" readily and-cheaply be replacedinstead-of on .lve claimp ff g 1; In a shank and bit punch, the iribination of a percussive-cylinder and a feeding cylinder, a support forthe'icylindersfhaving I a bearing surface,- and ab'e'aring shoe carried"390 by 'the cylinders adaptecll to 'overliang and: slide 'on'thebearing. surfaceand to form a cover for the bearing surface to' preventthe lodgelnent of foreign matter thereon.

"211i ajshanlr and 'bit'fpun ch,the'fcombina 'tionof-apercussivecylinder and a feeding cylinder, bearingsurfaces on thenether por tions' of i the cylinders, 'a support for the 1 cylindershaving'bearing surfaces toaccommodate the bearmgjsurfaces on thecylinder, and a bearmgishc'e carried by'thecylinder fo'rmi-ng a coverforthe bearing surface to-prevent ithe lodgeme'nt of foreign matter ontheb'e'ap ofjthe' bearingsurfa'ce." y v In a shank and bit punch, the*coinbina'-" tion ofja percussive cylinder and a feeding cylinder off-set withirespect to the ercussive BlQVaiDlOllS, and bearing shoescarried by' the ter on the said bearing surfaces. f g

'4. In a shank and bit punch, the 'comb1na- 'tion of a percussivecylinder anid'a feeding.

cylinder integral with-the percussivecylin der. said cylinders lying'indifferent 'longi-g tudinai planes, supportfor the Cyll'I1 de1S' having aplurality of bearing surfaces lying at diiferent elevations, bearingshoes carried by the cylinders slidable on the bearing surfaces andoverhanging them to form covers therefor to prevent the lodging offoreign matter on said bearing surfaces, guide means carried by thecylinder and being slidably interlocked with the support, and means foradjusting the guide meanswith respect to the support. I

5. In a shank and bit punch, the combination of a percussive cylinderand a feeding cylinder, a support for the cylinders having a pluralityof bearing surfacesvlying atdifferent elevations, bearing shoes for thecylinders slidable on the bearing surfaces and forming covers thereforto preventthe lodging of foreign matter on said bearing surfaces,beveled sides on the support, gibs secured to the cylinders and havingbevelled surfaces to slidably engage the-bevelled sides, and shimsbetween the gibs and thecylinders inders having bevelled surfaces toslidably engage the bevelled sides. a

9. In a shank and bit punch, the combination of a percussive and afeeding cylinder, a support for the cylinder having a bearing surface, abearing shoe'carried by the cylinder forming a cover for the bearingsurface to y prevent the lodgement of foreign matterfon the bearingsurface'and adapted to overhang one end of the bearing surface, bevelledsides on the support,gibs secured to the cylinders and having bevelledsurfaces to'slidably en;

gage the bevelled sides, and shims between the gibsand the cylinders topermit of lateral Q6 v In testimony whereof We have signed this andvertical adjustment of the gibs.

specification. V JESSE DITSON.

to permit of lateral and vertical adjustment of the gibs.

6. In a shank and bit punch, the combina tion of a percussive cylinderand a feeding cylinder, a support for the cylinders having a pluralityof bearing surfaces, bearing shoes for the cylinders slidable on thebearing surfaces and forming covers therefor to prevent the lodging offoreign matter on said bearing surfaces, recesses in the cylinders, anoil reservoir, supply passagesin the cylinders for conveying oil fromthe oil reser-, V

voir into the recesses, ports in the cylinders for conveying 011 fromthe recess to the bearing surfaces, and means in the recesses to filterthe oil flowing from the reservoir to the bearing surfaces.

7. In a shank and bit punch, the combina tion of a percussive cylinderand a feeding DUDLEY W. HART;

faces, recesses in the cylinders, an oil reservoir in the feedingcylinder, supply passage leading from the reservoirto the recesses,

ports for conveying oil from therecess to the bearing surfaces, andfibrous material in'the recesses to filter the oil during its passagethrough the recesses. r

8. In a shank and bit punch, the combination of a percussive and afeeding cylinder,a 7

support for the cylinder having a bearing surface, a bearing shoecarried by the cylinder forming a cover for the bearing surfacetoprevent the lodgement of, foreign matter on the bearing surface andadapted to overhang one end of the bearing surface, bevelled sides onthe support, and gibs secured to the cyl-

